7% of 24-2 VF), with 24 of the 34 locations being within 20° of retinal eccentricity. Focal nerve layer (FNL) thickness was significantly associated with 16 VF test locations (31.4% of 24-2 VF; eight locations within 20° eccentricity). For VF test locations in the central 10° VF, VF losses below the breakpoint were significantly associated with FCD (slope, 0.89 ± 0.12, P &lt; 0.001), but not with FNL thickness (slope, 0.57 ± 0.39, P = 0.15).
Focal capillary densities were significantly associated with a wider range of visual field losses and in a larger proportion of the visual field compared to nerve fiber thickness.
Focal capillary densities were significantly associated with a wider range of visual field losses and in a larger proportion of the visual field compared to nerve fiber thickness.The management of atlantoaxial dislocation (AAD) associated with basilar invagination (BI) is challenging, and traditional posterior-only approaches lack the ability to release the anterior soft tissue resulting in unsatisfactory reduction. Furthermore, vertebral artery anomalies and deformed anatomy increase surgical risks.
To introduce a safe and efficient technique to reduce congenital AAD and BI through a single-stage posterior-only approach.
A total of 65 patients with AAD and concomitant BI who had congenital osseous abnormalities were retrospectively analyzed. All patients had anterior soft tissue released through a posterior-only approach, followed by intra-facet cages implantation, cantilever correction, and instrumentation. Clinical results were measured using the Japanese Orthopedic Association (JOA) scale, and radiographic measurements included the atlanto-dental interval, the distance of odontoid tip above Chamberlain's line, clivus-canal angle (CCA), and syrinx length. Paired t-tests were used to compare preoperative and postoperative measurements.
The mean JOA score increased from 10.98 to 14.40 at 1-yr follow-up. https://www.selleckchem.com/products/torin-2.html Complete reduction of AAD and BI was achieved in 48 patients (73.8%). The mean CCA improved from 115° preoperatively to 129° postoperatively. Reduction of syrinx size was observed in 14 patients at 1 wk and in 35 patients 1 yr after surgery. All patients achieved bony fusion.
Posterior intra-articular distraction followed by cage implantation and cantilever correction can achieve complete reduction in most cases of congenitally anomalous AAD associated with BI.
Posterior intra-articular distraction followed by cage implantation and cantilever correction can achieve complete reduction in most cases of congenitally anomalous AAD associated with BI.Spinal schwannomas most likely occur at the thoracic level and within the intradural extramedullary compartment. They are benign, typically slow-growing, peripheral nerve sheath tumors that produce symptoms by displacing or compressing the nerve roots and spinal cord. There is an association with patients that have neurofibromatosis type 2. Surgical pearls including the utilization of intraoperative ultrasound for localization, D wave monitoring, and microsurgical dissection are demonstrated. Pertinent high-yield radiographic and histological features of schwannomas are reviewed.1-4 ?We report the case of a 59-yr-old female who presented with progressively worsening gait instability that was associated with lower extremity numbness progressing to weakness. She had myelopathic findings on examination, which included brisk patellar reflexes and persistent clonus with sensory changes to the umbilicus and mild leg weakness. Full body examination revealed no stigmata of neurofibromatosis. Magnetic resonance imaging of the neuroaxis demonstrated a large, intradural extramedullary mass with peripheral enhancement that spanned the T9 to T11 vertebral levels with severe compression of the spinal cord. There were no intracranial, cervical, or lumbar findings. Surgical intervention was planned with the following objectives decompression of the neural elements, curative resection, and diagnosis. Patient consent for the procedure was obtained. Institutional Review Board approval for solitary case reports are not needed at our institution.This is a case of a 73 yr-old female presenting with low back pain and bilateral sciatic pain, which progressed to bilateral lower extremity weakness about 1 yr after initial presentation. Imaging of her thoraco-lumbar spine revealed a ventriculus terminalis extending from the level of the eleventh thoracic vertebra (T11) to the first lumbar vertebra (L1). Ventriculus terminalis is an embryological ependymal lined cavity that normally regresses with development. In individuals with persistent ventriculus terminalis, it is usually incidentally noted during spine imaging for other purposes. Surgery is seldom indicated except for patients presenting with progressive neurological deficits. Patient was taken to surgery for fenestration of the ventriculus and decompression of the spinal canal. The patient was positioned prone, and after proper localization the vertebral column was exposed through a midline approach and a central laminectomy was performed from T11-L1. Intraoperative monitoring was used throughout the procedure. This video illustrates the gross appearance of a ventriculus terminalis, dissection of surrounding neural elements, and decompression of the ventriculus using a wide fenestration technique. ?All relevant patient identifiers have been removed from the video. Nevertheless, patient consent was obtained regarding video recording and redistribution of procedure for educational purposes.The use of gabapentinoids in multimodal postoperative analgesia is increasing; however, when coadministered with opioids, these drugs may potentiate central nervous system and respiratory depression.
To evaluate the association between perioperative coadministration of gabapentinoids and opioids with inpatient opioid-related adverse events in surgical patients.
This cohort study used propensity score trimming, stratification, and weighting of adults admitted for a major surgery between October 2007 and December 2017 who were treated with opioids on the day of surgery and included in the Premier Research database. Data analysis was conducted from February to April 2020.
Gabapentinoids (gabapentin or pregabalin) coadministered with opioids starting the day of surgery vs opioid therapy without gabapentinoids.
Primary outcome was opioid overdose. Secondary outcomes included respiratory complications, unspecified adverse effects of opioid use, and a composite of these 3 outcomes. Patients were followed up for as long as 30 days from the day of surgery until deviation from the initial treatment regimen or discharge.